Scale-beam.



PATENTED JULY 7, 1903..

0. G. STRUBLER.

SCALE BEAM.

APPLICATION FILED MAY 27. 1901 N0 MODEL.

0mm PETERS co s-Hom No. 733,297. V

UNITED STATES Patented July 7, i903.

PATENT OFFICE.

SCALE-BEAM.

SPECIFICATION forming part of Letters Patent No. 733,297, dated July '7,1903.

Application filed May 27, 1901- Serial No. 62,068. (No model.) i

To all whom it ntay concern:

Be it known that I, CHARLES G. STRUBLER, a citizen of the United States,residing at Detroit,in the county of lVayne and State of Michigan, haveinvented certain new and useful Improvements in Scale-Beams, of whichthe following is a specification, reference being had therein to theaccompanying drawings.

The invention relates to scales, and has more particular reference tothe construction of a beam intended for use in a computingscale.

The invention consists in the peculiar construction of a poise, and,further, in the construction and manner of securing the stops atopposite ends of the beam for limiting the movement of the poise.

In the drawings, Figure l is a perspective view of a portion of thebeam, showing the poise in engagement therewith. Fig. 2 is alongitudinal section through one end of the beam, illustrating the stopfor limiting the poise. Fig. 3 is a perspective view of the parts shownin Fig. 2 detached. Fig. 4 is an enlarged cross-section through aportion of the poise.

The beam to which my improvements are applied is especially designed foruse in computing-scales of that type having a flat rotarycomputing-chart and a poise slidable upon said chart. The latter hasmarked thereon the units of value, while the chart carries thecomputations for each of said units arranged in line therewith.Heretofore beams of this character have been formed comprising asubstantially rectangular metallic frame having a panelsecured thereinwhich carries the computations. The poise has been formed of twosections of sheet metal joined together at top and bottom by solderingto form a loop embracing the beam, and disengagement of the poise isprevented by stop-pins arranged at opposite ends of the beam andprojecting from the edge thereof. With such construetions it has beenfound that the stop-pins are liable to be broken off, as they arenecessarily limited in size by the thickness of the beam.

In the present construction a stop is formed by a shoulder cut in a flatpiece of metal, the latter being mortised into the edge of the beam, asshown in Fig. 2.

In detail, A is the edge bar of the beam. 13 is a longitudinal slot ormortise formed therein, preferably of segmental form, made by sawinginto the edge of the beam.

0 is a plate of fiat metal of a Width to fit into the slot or saw-kerfB, which plate is of a segmental form corresponding to said slot and isprovided with a shoulder D, adapted to project outward beyond the slotwhen the plate is placed therein. Beyond the shoulder D is a portion Eof the plate tapered down to the edge of the beam. The plate thus formedis placed in the groove and secured therein preferably by soldering.With this construction a strong stop is formed, as the width of themetal beyond the shoulder D is very much greater than the thickness ofthe beam. At the same time the plate 0 is securely attached to the beamby reason of the large surface to which the solder adheres.

E is a poise which is of the following construction: a and Z) are twoplates forming, respectively, two sides of a loop encircling the beam.At their ends these sides are bent inwardly at c and then outwardlyagain to form hooks or return-bends cl. 6 is a top plate having theinwardly-turned books or flanges f, adapted to engage with the hook dand lock the two plates at and btogether. Thus when the parts arepressed together the complete loop is formed having the top and bottomportions thereof formed of several thicknesses of sheet metal.

What I claim as my invention is- 1. The combination with a scale-beamand a poise thereon, of a stop for limiting the movement of said poisecomprising a segmental metallic plate of lesser thickness than the beammortised into a correspondingly-shaped slot in the edge of said beam andsoldered therein, said plate having an outwardly-projecting portionform-ed With a square shoulder and tapering portion beyond saidshoulder.

2. The combination with a scale-beam, of a poise therefor comprising twoplates arranged on opposite sides of the beam and having hooked flangesat their edges and edge plates provided with complementary hooks adaptedto engage with the flanges of said side plates to form a closed loop.

3. The combination with a scale-beam, of a poise therefor comprisingplates arranged on opposite sides of said beam and having In testimonywhereofi I affix my signature return-bend flanges projecting over theedges in presence of two Witnesses.

' of said beam and edge 'plates provided with oppositely-bent flangeshaving a eieneh en- CHARLES STRUBLER' gagement with said return-bendflanges t0 Witnesses:

form of said poise a closed loop encircling the M.- B. ODOGHERTY,

beam. H. 0. SMITH.

